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虽然前面都使用的View来进行绘图，但View绘图机制存在两个缺陷：
1、缺乏双缓冲机制
2、更新图像时，必须更新View上的整张图片，效率低。
所以在游戏绘制中推荐使用SurfaceView。它可以只对指定区域进行更新，可以提高效率。下面用一个简单示例来演示SurfaceView的使用：
Activity：
package com.home.activity;import android.app.Activity;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Rect;
import android.os.Bundle;
import android.view.MotionEvent;
import android.view.SurfaceHolder;
import android.view.SurfaceHolder.Callback;
import android.view.SurfaceView;
import android.view.View;
import android.view.View.OnTouchListener;import com.home.surfaceviewtest.R;public class SurfaceViewActivity extends Activity {// SurfaceHolder负责维护SurfaceView上绘制的内容private SurfaceHolder holder;private Paint paint;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.main);paint = new Paint();// 获取SurfaceView实例SurfaceView surface = (SurfaceView) findViewById(R.id.main_sv);// 初始化SurfaceHolder对象holder = surface.getHolder();holder.addCallback(new Callback() {//当surface将要被销毁时回调该方法@Overridepublic void surfaceDestroyed(SurfaceHolder holder) {}//当surface被创建时回调该方法@Overridepublic void surfaceCreated(SurfaceHolder holder) {// 锁定整个SurfaceViewCanvas canvas = holder.lockCanvas();// 获取背景资源Bitmap bitmap = BitmapFactory.decodeResource(SurfaceViewActivity.this.getResources(),R.drawable.image2);// 绘制背景canvas.drawBitmap(bitmap, 0, 0, null);// 绘制完成，释放画布，提交修改holder.unlockCanvasAndPost(canvas);// 重新锁两次，避免下次lockCanvas遮挡holder.lockCanvas(new Rect(0, 0, 0, 0));holder.unlockCanvasAndPost(canvas);holder.lockCanvas(new Rect(0, 0, 0, 0));holder.unlockCanvasAndPost(canvas);}//当一个surface的格式或大小发生改变时回调该方法@Overridepublic void surfaceChanged(SurfaceHolder holder, int format,int width, int height) {}});surface.setOnTouchListener(new OnTouchListener() {@Overridepublic boolean onTouch(View v, MotionEvent event) {// 只处理按下事件if (event.getAction() == MotionEvent.ACTION_DOWN) {int cx = (int) event.getX();int cy = (int) event.getY();// 锁定SurfaceView的局部区域，只更新局部内容Canvas canvas = holder.lockCanvas(new Rect(cx - 60,cy - 60, cx + 60, cy + 60));// 保存canvas的当前状态canvas.save();// 旋转画布canvas.rotate(30, cx, cy);paint.setColor(Color.RED);// 绘制红色方块canvas.drawRect(cx - 40, cy - 40, cx, cy, paint);// 恢复canvas之前的保存状态canvas.restore();paint.setColor(Color.GREEN);// 绘制绿色方块canvas.drawRect(cx, cy, cx + 40, cy + 40, paint);// 绘制完成，释放画布，提交修改holder.unlockCanvasAndPost(canvas);}return false;}});}}
布局XML：
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="match_parent"android:layout_height="match_parent"android:orientation="vertical"><SurfaceViewandroid:id="@+id/main_sv"android:layout_width="match_parent"android:layout_height="match_parent"/></LinearLayout>